PSAT review

Question 1

midpoint formula

Answer 1

x1+x2 y1+y2
(———-, ———-)
2 2

Question 2

x1+x2 y1+y2
(———-, ———-)
2 2

Answer 2

midpoint formula

Question 3

distance formula

Answer 3

( (x2-x1)squared+(y2-y1)squared ) rooted

Question 4

( (x2-x1)squared+(y2-y1)squared ) rooted

Answer 4

distance formula

Question 5

what is a conditional?

Answer 5

an “if… then” statement (p->q)

Question 6

what is a conclusion?

Answer 6

part of a conditional that follows “then” (q)

Question 7

what is a hypothesis?

Answer 7

part of a conditional that follows “if” (p)

Question 8

What is a negation?

Answer 8

the opposite of a negation (~)

Question 9

What is a converse?

Answer 9

a conditional switched around: (q->p)

Question 10

What is an inverse?

Answer 10

a conditional made negative, but in the same order: (not p, not q)

Question 11

What is a contrpositive?

Answer 11

a conditional switched around AND made negative: (not q, not p)

Question 12

What is a biconditional?

Answer 12

statement that combines a true conditional and its true converse

Question 13

What does the Law of Syllogism state?

Answer 13

if p->q is true and q-> r is true, then p->r is also true

Question 14

What is a parallel line?

Answer 14

coplanar lines that do not intersect

Question 15

What are parallel planes?

Answer 15

planes that don’t intersect

Question 16

What are skew lines?

Answer 16

noncoplanar lines that don’t intersect

Question 17

are alternate interior angles congruent or equal 180?

Answer 17

they equal 180

Question 18

are same-side interior angles congruent or equal 180?

Answer 18

they equal 180

Question 19

are corresponding angles congruent or equal 180?

Answer 19

they equal 180

Question 20

are alternate exterior angles congruent or equal 180?

Answer 20

they are congruent

Question 21

equation to find slope

Answer 21

y2-y1 / x2-x1

Question 22

slope intercept form

Answer 22

y=mx+b

Question 23

point-slope form

Answer 23

y-y1=m(x-x1)